Bug 1656986 (CVE-2018-19854)

Summary:	CVE-2018-19854 kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, airlied, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, john.j5live, jonathan, josef, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, rt-maint, rvrbovsk, slawomir, steved, vdronov, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 4.19.3	Doc Type:	If docs needed, set a value
Doc Text:	An issue was discovered in the Linux kernel in the crypto_report_one() and related functions in the crypto/crypto_user.c (the crypto user configuration API) which do not fully initialize structures that are copied to userspace, potentially leaking sensitive kernel memory content to a userspace.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-11-06 00:51:28 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1657879, 1657880, 1657881, 1657882
Bug Blocks:	1656989

Description Laura Pardo 2018-12-06 19:34:18 UTC

An issue was discovered in the Linux kernel in the crypto_report_one() and related functions in the crypto/crypto_user.c (the crypto user configuration API) which do not fully initialize structures that are copied to userspace, potentially leaking sensitive kernel memory content to a userspace.

References:

https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087

Comment 3 Vladis Dronov 2018-12-10 16:24:03 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1657882]

Comment 5 errata-xmlrpc 2019-11-05 20:34:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3309 https://access.redhat.com/errata/RHSA-2019:3309

Comment 6 errata-xmlrpc 2019-11-05 21:05:29 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3517 https://access.redhat.com/errata/RHSA-2019:3517

Comment 7 Product Security DevOps Team 2019-11-06 00:51:28 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-19854